10:28 Jan 30 

Merci à tous pour votre aide et votre grande disponibilité

10:27 Jan 30 

Le client m'a fait parvenir un autre document à traduire traitant du meme produit. Le "croisemen t" des deux sources confirme l'hypothèse de Tony, c'est à dire qu'il faut effectivement faire repartir la pompe pour pouvoir effectuer le test d'étanchéité.

20:16 Jan 26 

I have to say that I naturally and instinctively read it first off as 'override to turn it on', and hence was quite surprised when I scrolled down to see the contrary suggestions, which hadn't immediately occurred to me at all.

FWIW!

20:14 Jan 26 

Voilà le sens de "override"

Fonctionnement de la pompe à huile, puis arrêt automatique à 57°.
Pour tester, "override oil pump ON", et vérifier si les raccords sont bien étanches.

20:11 Jan 26 

mon doute est exactement celui soulevé par cette discussion : s'agit-il ou non de couper la pompe. Le paragraphe concerné est en fait une liste de différentes opérations, entre autres :
remplacer le filtre à huile usagé, controler les raccords, controler la pression différentielle entre le carter et la pompe, remettre la pompe en mode automatique...

16:11 Jan 26 

...are we certain that is indeed the context here? Asker hasn't said so, but perhaps you know something about the actual context here we don't?

Again, that would tend to confirm my #2 — if the pump is usually 'off', we need to override it to 'on'.

16:11 Jan 26 

override renvoie à une autorisation, je n'ai jamais dit que c'était la température qui stoppait la pompe...

16:07 Jan 26 

sur les navire, la pompe de prégraissage est stoppée par un pressostat lorsque la pompe à huile attelée assure le graissage (la pression de refoulement de la pompe attelée est supérieure à celle de la pompe de prégraissage).

15:59 Jan 26 

I think Tony is on to something.

Florence's electric pump normally switches off at 57°
"Override it on" => switch it back on to check for leaks (test procedure)

I thought "override" was a strange verb to use if it only meant "switch off".

15:53 Jan 26 

How do you know this, do you have more of asker's context?

So in that case, if the electric pre-lubricating pump is normally turned off once this temp. is reached, it looks as if my #2 might well be correct here — although the electric pump should normally be 'off' once this temp. is reached, here we are being asked to force it 'on'. I can see no logic at all in overriding something to 'off' if it is already off anyway!

15:44 Jan 26 

57°C c'est une température normale pour l'huile d'un moteur diesel en fonctionnement ou en stand by..

15:28 Jan 26 

c'est une pompe électrique de prégraissage qui est en service lorsque le d.a. est en stand by... lorsque le moteur fonctionne, c'est la pompe attelée qui assure le graissage et la pompe électrique ne sert plus à rien donc on la stoppe..

14:43 Jan 26 

You'll probably need to check carefully with the rest of your source text, since this is possibly diametrically ambiguous! It depends a bit, too, on just how careful the writer was with wording and punctuation.

Here are my two interpretations:

1) The oil pump is currently receiving an 'on' command signal; override this in order to make sure it is 'off'

2) The oil pump may be 'on' or 'off', but you should force it to 'on' by giving it a command that overrides its normal control signal.

The problem is, if meaning #1 was intended, it really ought to have read "Override the oil pump 'on'...", whereas without the ' ', it tends (ever so slightly!) to favour #2.

I think more context is going to be necessary to help decide for sure.

Apart from anything else, what wouldd be the technical logic? What is going on here, once the oil reaches this temperature, what is suposed to happen? Here, you could probably usefully explain a bit more of the overall context to us...

The fact that it says you then have to "check for leaks" could well indicate that the pump needs to be on, in order presumably to provide pressure that will make the leaks more evident; but again, uncertain...